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Ragemonkey
05-12-07, 12:34 PM
Don't know if any of you have heard about UVB lighting . They use them in reptile houses to provide the reptiles with their UVB fix :) . Anyway studies show that the (Δ9- tetrahydrocannabinol) in the trichomes on a cannabis plant abosrbs the harmful UVB rays to protect the plant . So the more UVB rays you fire at a plant the More THC it will produce to protect itself .

HPS lights don't produce any UVB at all
Green house glass is engineered to filter out UVB
Metal Halide lamps produce ALOT of UVB but it gets filtered out by the glass that the bulb is made off .

However , you can buy the specially made reptile lights from pet stores ( They're long fluro looking tubes ) . These produce alot of UVB and it doesn't get filtered out .

UVB is the reason why weed grown in Afghanistan can be very potent . Thanks to "Global Warming" wev'e now got holes in the ozone layer above afghanistan and Holland , these holes let more UVB rays penatrate so the plants in these areas go into THC production overdrive to stop themselves burning up .

Heres a link explaining it in a little more detail http://www.youtube.com/watch?v=IPcpt3Be28o

Also two brothers both grew clones of the same plant , in exactly the same conditions apart from one brother had a Reptile UVB light in his growroom . Anyway at the end of the grows the UVB plant had 20% more THC on its main cola and other areas around the top of the plant .

The main problem with reptile lights is the penetration , they run at low wattages (25-48 watts) . And can only pentetrate a few inches (4-6) . However they are cheap about £20 for a 10% producing UVB light . If you had the money and wanted to splash out you could pick up a skin treatment UVB lamp for £400 :blush: these things run at 300-400 watts and really pump out UVB .

Basicly what im saying is if you drop your humidity and slam on the UVB rays when the plant is mid flower your going to get some beasty THC production .

.

Bitterfly
05-12-07, 07:28 PM
very very interesting mate i would love someone to do a grow to test this out!

Ragemonkey
05-12-07, 07:55 PM
Well iv'e got some White widows and Northern lights on Veg for another 3 weeks , And im gona pick up 2-3 of the UVB reptile lights to test them out when i put them in flower , Ill make a diary and post the results , should be intersting !

Rabiez
05-12-07, 08:37 PM
I've no argument with UVB increasing trich production in small grows, but I may have to see evidence to be convinced of this...


Thanks to "Global Warming" wev'e now got holes in the ozone layer above afghanistan and Holland.

Fshaw!

:p

lkdj2003
05-12-07, 09:35 PM
Cool, this will be interesting. I think i can remember reading somewhere about UVB helps resin production like you say Rab's. Good luck with it mate. :weed:

marijuanamat
06-12-07, 12:16 PM
UV-b has been shown to increase the THC/potency,the best UV-b lamp is the 300w ultra-vitalux,
http://www.reptilica.co.uk/product_info.php/product/Osram_ (http://www.reptilica.co.uk/product_info.php/product/Osram_ULTRA-VITALUX_Sun_Lamp_300W)
ULTRA (http://www.reptilica.co.uk/product_info.php/product/Osram_ULTRA-VITALUX_Sun_Lamp_300W)-VITALUX_Sun_Lamp_300W (http://www.reptilica.co.uk/product_info.php/product/Osram_ULTRA-VITALUX_Sun_Lamp_300W)

Bitterfly
06-12-07, 06:05 PM
spot on links there matt!!

baza
07-12-07, 02:52 PM
good for plants but bad for the skin.....
Dont spend too much time in your growroom with it on tho.